Two-roll type crusher-feeder



July 31, 1951 F. H. NlcKLE ET AL f 2,562,282

TWO-ROLL TYPE CRUSHER-FEEDER Z 25 I l INVENTORS 4/ BY PZ g July 3l, 1951F. H. NlckLE ETAL Two-ROLL TYPE cRusHER-FEEDER Filed' Jan. 19, 194e 2Sheets-Sheei 2 '1NVENTOR5 BY ATTORNEY.'

Patented July 31", 17951 Frank H. Niklei and A 'rtuur Quickie, 4 lSaginaw, l .Applieationianuary 19, 1946;r SeralLNm- 64%,3145 I l 'zclaims. (c1. 2419141) eeders adapted-,for reducing bulki or lumpmaterials and feeding the' reduced product at any desired rateofvfiowitopulverizing mills or other lm focessing equipment requiring. asteady influx. VA specific application is the crushingr and feed-v ing.ofearv corni to feed-grinding millst Also, this invention relates toamachine adapted for reducing materials to a predetermined: size, suchasuthe reduction of Y-w-liolecorncob to a uniform size-suitalole;` forpoultry litter. For either purpcse the constructionfisidentical, as itis characteristic of;r roll 'type erusher-feeders that the reduced.product1 becomes ner when the rate of efilux. is` reduced, andcon-trawise, coarser when the rateof flowis increased.`

-Theprimary object of--this invention isi to providefaf flow-controllingmechanism for a' twor-ellf ear cor-n Crusher or the like which may bemanually adjusted-gwith little efiortto vary the rate of; output`v andthe neness of thegreducedmaterial.

Another object is Ito provide a valve-mechanism which remains inA setposition despite the 'tendency of the outgoingmaterials'to crowdthevalves @Den-n l l Apurtherobject to provide` arigid supportingvandclampingmeans for the r4stationary shearing element which co-actswith the rolls when the material isbeing. reduced.

L Fig lis airagmentaryplanvew ofv a tworoll type Crusher-feeder in whichour inventionisergcbodiedg the housing,Vx rotative elements and other`parts being broken away-` tomore clearly shew; the flowcontrol Irlechanisin.l

Eig-.5 2- is a. transverse 'sectional elevation taken 0111-. liner 2&2:0f li-fier- 1;y .Y 3 is alongitudinalsectional elevation taken on) lineV3- 3- ofv Fig. 2i-

Figl 4 isv an-` exploded isometric fragmentaryviewshowing theflow-control mechanism, the

brokenfl-ines showing; range of movement ofl Valve plates.- Y InthejAdrawings, numerals l0 and |l designate endand side wallsrespectively ofarectangular housing that receives bulk materials` (not shown). The endwallsf' Hlfare made vto supportvv flange@ bea-rings! 1% in which a pair.of roll shafts L31 and.y |4- a-re jou--inaled,` these shafts projecting.

`outwar-dly on one endtoA receiveintermeshing gears` i5 that `makerollsf coactingthe direction @init-ating: being as indicated: by arrowsin Fig.; 2 of the drawings. ,r u

".-Tlzeqrvllfeshaffts ,Hkanddk canrrteeth |16 for Mich.

reducing materialxby, action of the peripheral cutting edges Ilvtraveling in close relation to stationary shearbar t8; which. bar iscentrally dis* posed between the rolls and adapted to receive impactfrom the" teeth on: either roll. o

The.. shear bar t8 isamounted upon a cross bar |19 that spansy the"YhousingV H in` parallel symmetrical relation .toi the shearbar vandforms the middle portion ofjthe bottom structure. Underlying andsupporting the cross bar I9 is a pair of angle=shaped spaced-'aparthorizontal side rails 2U' that are' disposed atright angles to the shearbar and attached to" end walls I0.

Tubulartseparatorsll are' mounted on side rails 2U and'thecross bar |19isV supported thereon:y the space thus formed' being adapted to accom-1Inodate ai pairor superimposedv Valvev plates .2-2 and 23 that. spanthe-housing parallel'l to shear bar' t8; theiends being. slidablycarriedabove and uipoir the upperfac'es oi? tl'ie side rails 20, so that theymay be moved-atZ right anglesA to their spans.

Underlying rollshaft; Iii is a rectangular outlet opening".` 215. forthepassjageof reduced: material thev four marginal edges being dennedbly cross bar lgfbottoi'rillip 26- of! theA loottorirstruc-I tura-andside rails. 'iciv Underlying rolishaft |.4`

is a Similar' rec'g" 61151615 Opening- 21 that is` dened by'overhangingf lipr zs which is formed with crossbar" f9,- lip 291 ofthefloottomstructur'a and side rails 20. the-flow: of the reducedmaterial: is partially i: e'rrupted,` outlet-25 i-'s then defined by thestationary elements 26, 2832-20 andtheieading edge-of'movable plate 22.Like-'- wise', outletfZ'F i'sdeiied bx stationary elements" ig,20V-'2lil and movalle plate 23; The areas cf'- the' two; outlets 25;afnuzare' equal and sym-A metrical with respect td a1 vertical planepassed midway between axes of the roll' shafts,'thesyn1' metry remainingconstaritwl'ien the rate of elux through outlets is varied AVby valve"plates 22 and" 2'3 res'peet'ifvely;v f

The valve plate: 22i's sl'idably supported upou raised bos's'esi' on'side rails 2'0, the upper faces' O'N the' lcos's's'b'eig cpanarfwth1p'26', so that when the plate isf nio'ved at' right angles to itsSpainA toward l'p 26;v tHellX through Outlet 2'5' is interrupted. Theupper face of vaive' platt-:Pzz' islfi'at andsfida-blyJ aputs'tlebttomof cross par |191 The vali/ef' platee i ai'sd Carried upontitlei upper'Vfaces of th'esde railsilZll-Q` said-fY plate ybeinec adapted? itrilutefll'i through outlet 2Tf when moved towards th@ bottom lip 29;The-ur'r--l` per facefof-valvep1ate123=isialsoflatg it slidabl'yfabutting" the overhanginglipf 28' onY cross bar t9? and -likewise theoverlapping port-ion' ofL val-va plate 22. In other words, the upperface of valve plate 22 is superimposed in a horizontal plane above upperface of valve plate 23.

When the valve plates are positioned so that the outlets are fullyclosed, the leading edge 3| of plate 22 overlaps lip 26 of bottomstructure. and likewise, the leading edge 32 of plate 23 overlaps lip29, thereby effecting leak-proof closures. Y j

It will be noted that when the valve plates are not fully retractedbelow cross bar I9, the leading edge and the two end edges of each valveplate are always exposed to the material in which the rolls aresubmerged. The vertical build-up pressure of material upon the exposedupper faces of the valve plates, due to the downward force of rollteeth, is a factor in preventing any unwarranted movement of the valveplates when the machine is in operation, as such pressure increases thestatic friction between the valve plates and the supporting rails.

The shear bar I8 and cross bar I9 are secured to the side rails 20 bymeans of a pair of capscrews 33, that extend upward through openings 34in the side rails, tubular separators 2|, and openings 35 in the crossbar I9, all of which are in alignment with the threaded openings 36 inshear bar with which the capscrews are engaged.

The valve plates are actuated simultaneously in co-ordinated reciprocalrelation by means of a pair of rocker arms 31 and 38 on opposite sidesof the housing, which .arms connect with links 39 and 40 rigidly weldedto valve plates 22 and 23 respectively, the ends 4| and 42 being turnedupward to make pivotal engagement with the adjacent rocker arms. Theserocker arms 31 and 38 are pivoted to a pair of brackets 43 on oppositesides of the housing. To either rocker arm is attached a vertical stem44 that carries a handle 45 that may be manually operated to impartmovement to the valves.

The bearings I2 are secured to the end walls IU by means of a pluralityof machine bolts 45 having heads 41 on the inside of the end walls.Between the lowermost centrally disposed bolt heads 41, the ends of theshear bar I8 are closely seated, thereby rigidlyv supporting the shearbar so that it may react against lany horizontal forces due to impactfrom the crushing rolls when crushing or shearingrmaterial.

To remove the shear bar, which must be replaced when the shearing edgesbecome worn, the capscrews 33 are unscrewed, thereby permitting theshear bar to be raised vertically to free the ends from the seat betweenthe bolt heads 41. To facilitate raising the shear bar, the cross bar I9is provided with one or more holes 48 directly below the shear bar,these holes being adapted to receive a knockout punch (not shown) fordriving the shear bar upward.

In operation, an important feature is the fact that valve plates 22 and23 always move freely and remain set in any Iadjusted position, thisbeing the result of two contributing factors, one of which is thebuild-up pressure of the material above valve plates, whereby the staticfriction is increased as above explained. Theother contributing factoris the tendency of roll teeth to sweep the material over the leadingedges 3| and 32 of the valve plates. If the rolls were reversed, so thatthe material would be forced against the leading edges by action of themoving roll teeth, then the resulting pressure would tend to crowd thevalve plates open, thereby destroying the predetermined rate of eillux.

Another outstanding feature is the fact that the rate of elux from thetwo outlets is equal regardless of how the valve plates are positioned,and further, the size of the reduced material is same from each outlet.This latter feature makes it practical to employ above describedflowcontrolling mechanism on any two-roll crushing machine for use inreducing or granulating materials to a predetermined size,l the `sizebeing varied by adjustment of control handle.

What we claim is:

1. In a machine for reducing material, a housing that receives thematerial, a bottom structure for the housing having a pair of outletopenings, a pair of downwardly co-acting rolls with teeth for reducingthe material, the rolls having shafts journaled in flanged bearings, aplurality of threaded bolts for securing each bearing flange to itssupporting wallksaid bolts having heads seating against the inside ofthe wall, a stationary shear bar positioned between the rolls to receiveimpact from the teeth on the rolls, and means for rigidly supporting theshear bar to react against the vertical and horizontal components of theimpact, said means for reacting against the horizontal componentcomprising the opposite ends of the shear bar seated in metal-tometalcontact between the lowermost adjacent 'bolt heads. l C

2. In a machine for reducing material, a housing that receives thematerial, a pair of downwardly co-acting rolls submerged in the materialundergoing reduction, a stationary shear bar mounted between the rollsto receive impact from the roll teeth, a threaded opening in each endsection of the shear bar that is adapted to engage a vertical capscrew,means for supporting the shear bar, said means including a cross barunderlying the shear bar in parallel relation therewith and havingopenings thatA align ywith the shear bar openings, means for supportingthe' ends of the cross bar, said means comprising oppositely disposedside rails carried by side walls of the housing and having openings thatalign' with the shear baroperlings, and means .for

clamping the cross bar between the shear'bar and the side rails; saidmeans comprising'a pairV of capscrews engaging the shear bar andseating; against the underside of theside rails.

3. The combination as set forth in claim 2 wherein the cross bar isheldin spaced relation above the side rails by means ofl a pair'oftubular separator elements. V f

4. In a machine for reducing and feeding material, the combination thatincludes a housing* in which is journaled `Va pair of downwardly `co'-acting rolls, said rolls having Vteeth for'reducing the material, astationary element positioned be? tween the rolls to receive impact fromthe teeth on both rolls, a bottom structure for the housing" having adischarge outlet `underlying each ':roll, and flow-controlling means forsimultaneously interruptingl the efflux from each outlet, said meansincluding a pair of valve plates slidablyi supported by the housing forhorizontal movement below the rolls in inverse relation and in?Ysuperimposed planes that directl'ygunderlie the impactreceiving element.Y- A f 5. The combination as defined in claim wherein theflow-controlling mechanism includes rotatable interconnected means forretracting thevalve plates together to increase lthe rate of efflux*-from the machine, said means including a verticalVV stem with handle. v

6. In a machine for reducing and'ffeeding ma.-

5 terial, the combination that includes a housing which receives thematerial, a pair of downwardly coacting rolls journaled in the housingfor reducing the material, said rolls having circumferentially spacedteeth submerged in the material, a bottom structure for the housing, abottom discharge outlet underlying each roll, each of said outlets beingdened by coplanar elements on three sides and on the fourth side by theleading edge of a slidably mounted valve 10 plate, means for supportingthe valve plates in superimposed horizontal planes, said means being theupper faces of the coplanar elements in the respective planes, androtatable means supported by the housing for moving the valve plates inreciprocal coordinated relation to interrupt the effluxes.

7. The combination as dened in claim 6 wherein the rotatable means formoving the valve plates includes a stem which projects upwardly abovethe housing with a handle mounted thereon.

FRANK H. NICKLE. ARTHUR G. NICKLE.

6 REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 122,877 Brown Jan. 23, 1872284,135 Livingston Aug. 28, 1883 348,554 Gilbert Sept. 7, 1886 380,245Creager Mar. 27, 1888 408,448 Winchell Aug, 6, 1889 416,533 WinchellDec. 3, 1889 926,168 Cadwgan June 29, 1909 1,634,219 Smith June 28, 1927FOREIGN PATENTS Number Country Date 232,842 Germany Mar. 23, 1911

